Manchester United boss Sir Alex Ferguson is facing an FA probe.

The Daily Mail says Ferguson faces an FA probe after allegedly making obscene gestures at Reading fans in Manchester United's 2-0 away win.

Ferguson, furious with referee Steve Bennett for signalling four minutes' injury time as United held on to a 1-0 lead, made the fist-pumping gesture when Cristiano Ronaldo scored the late second goal after a touchline run-in with Reading coach Wally Downes.

The FA confirmed they will study video evidence of the incident and ask Ferguson to explain his actions. He is just back from a touchline ban after being fined £5,000 for using 'foul and abusive language' at Bolton.

Ferguson, speaking in Riyadh ahead of United's testimonial game against Al Hilal tonight, said: "All I was doing was expressing my relief at winning what was one of our hardest matches of the season."